Answer:
I assume this is for Ecology, right?
Population dispersion is a property of populations where there is a pattern of spacing of individuals within the area the population inhabits. Patterns include clumped, uniform, and random.
Explanation:
Clumped Dispersion Pattern is the most common where organisms travel in groups because there's safety in numbers (take an example why elephants always travel in groups, or like wolf packs exist. Can also be used for mating purposes too.)
Uniform Dispersion Pattern is where there is an evenly spaced number of organisms around an area. Not as most common, but definitely seen when there's scarcity of resources (like how penguins shuffle together to conserve heat in the cold tundras).
Random Dispersion Pattern occurs in the absence of any special attractions or repulsions. For example, dandelions found in random green areas.
Hope that helps! :)